Reception node and transmission node using mutual resonance, power and data transceiving system using mutual resonance, and method thereof

Patent metadata

Field	Value
Publication number	US-9347168-B2
Application number	US-201414155850-A
Country	US
Kind code	B2
Filing date	Jan 15, 2014
Priority date	Jan 22, 2013
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A reception (RX) node using mutual resonance includes a target resonator configured to receive power via mutual resonance with a source resonator; a controller configured to wake up in response to the received power, determine a point in time at which the controller woke up to be a point in time at which synchronization with other RX nodes is performed, and generate a data packet, and a sensor configured to wake up in response to the received power, sense information.

First claim

What is claimed is:

1. A reception (RX) node using mutual resonance, the RX node comprising:
a target resonator configured to receive power via mutual resonance with a source resonator;
a sensor configured to sense information in response to the received power;
a controller configured to, in response to the received power:
determine a point in time at which the controller wakes up to be a point in time at which synchronization with other RX nodes is performed;
generate a data packet comprising the sensed information; and
transmit the data packet to the source resonator via the target resonator at a timing that is set based on the determined point to prevent the RX node from colliding with any of the other RX nodes.

2. The RX node of claim 1 , wherein the controller is further configured to transmit the data packet to the source resonator via the target resonator after a data transmission waiting time elapses from a time the power is received by the target resonator;
wherein the data transmission waiting time is set for the RX node to prevent the RX node from colliding with the any of the other RX nodes.

3. The RX node of claim 1 , further comprising a modulator configured to modulate the data packet using a load modulation scheme;
wherein the target resonator is further configured to transmit the modulated data packet to the source resonator via the mutual resonance.

4. The RX node of claim 1 , wherein the power received by the target resonator is alternating current (AC) power; and
the RX node further comprises:
a rectifier configured to:
receive the AC power from the target resonator; and
rectify the AC power to direct current (DC) power; and
a DC-to-DC (DC/DC) converter configured to:
convert a voltage level of the DC power to a rated voltage level of the controller; and
convert the voltage level of the DC power to a rated voltage level of the sensor.

5. The RX node of claim 1 , wherein the controller is further configured to output a sensing request;
the sensor comprises a battery configured to be charged by the received power; and
the sensor is further configured to:
receive the sensing request from the controller;
determine whether an amount of power stored in the battery is equal to or greater than a minimum amount of power the sensor needs to sense the information; and
sense the information in response to the sensing request and a result of the determining being that the amount of power stored in the battery is equal to or greater than the minimum amount of power the sensor needs to sense the information.

6. The RX node of claim 1 , wherein the source resonator is mounted in a door of a kimchi refrigerator;
the target resonator, the controller, and the sensor are mounted in a kimchi container of the kimchi refrigerator;
the sensor is further configured to sense an acidity of kimchi in the kimchi container, and an internal temperature of the kimchi container; and
the controller is further configured to determine an aging state of the kimchi based on the acidity.

7. The RX node of claim 1 , wherein the source resonator is mounted in a door of a washing machine;
the target resonator, the controller, and the sensor are mounted in a washing container of the washing machine;
the sensor is further configured to sense any one or any combination of a weight of laundry in the washing container, a pressure of water flowing into the washing container, an internal temperature of the washing container, and an internal humidity of the washing container; and
the controller is further configured to determine a washing state of the laundry.

8. The RX node of claim 1 , wherein the controller is further configured to transmit the data packet to the source resonator via the target resonator at a bandwidth corresponding to the mutual resonance.

9. A transmission (TX) node using mutual resonance, the TX node comprising:
a source resonator configured to:
transmit power via mutual resonance with a target resonator of an RX node; and
receive a signal from the target resonator, the signal having been generated by the RX node load-modulating a data packet and transmitted at a timing that is set based on a point;
a demodulator configured to demodulate the data packet based on a change in a waveform of the signal received by the source resonator; and
a controller configured to display information in the demodulated data packet on a display window,
wherein the point is determined in time at which the RX node wakes up to be a point in time at which synchronization with other RX nodes is performed.

10. The TX node of claim 9 , wherein the controller is further configured to determine an amount of power to be transmitted by the source resonator based on a power level needed to wake up a controller and a sensor of the RX node.

11. The TX node of claim 9 , wherein the controller is further configured to:
interrupt transmission of the power from the source resonator in response to completion of receiving of the data packet from the RX node; and
restart transmission of the power from the source resonator in response to a predetermined delay period elapsing after the interruption of the transmission of the power.

12. The TX node of claim 9 , further comprising:
a frequency generator configured to generate a signal having a resonant frequency enabling the source resonator and the target resonator to mutually resonate; and
an amplifier configured to amplify the signal having the resonant frequency to a controllable power level;
wherein the controller is further configured to control the amplifier to control the power level of the amplified signal.

13. The TX node of claim 9 , wherein the source resonator, the demodulator, and the controller are mounted in a door of a kimchi refrigerator;
the RX node is mounted in a kimchi container of the kimchi refrigerator; and
the controller is further configured to:
acquire an aging state of kimchi in the kimchi container from the demodulated data packet; and
display the acquired aging state on the display window.

14. The TX node of claim 9 , wherein the source resonator, the demodulator, and the controller are mounted in a door of a washing machine;
the RX node is mounted in a washing container of the washing machine; and
the controller is further configured to:
acquire washing information of laundry in the washing container from the demodulated data packet; and
display the acquired washing information on the display window.

15. A system for transceiving power and data using mutual resonance, the system comprising:
a transmission (TX) node comprising a source resonator configured to transmit power; and
a plurality of reception (RX) nodes each comprising:
a target resonator configured to receive power from the source resonator via mutual resonance with the source resonator;
a controller configured to:
wake up in response to the received power;
determine a point in time at which the controller wakes up to be a point in time at which synchronization with other RX nodes of the plurality of RX nodes is performed; and
generate a data packet; and
a sensor configured to:
wake up in response to the received power; and
sense information;
wherein the source resonator and the target resonator of each of the plurality of RX nodes are further configured so that the source resonator mutually resonates with the target resonator of each of the plurality of RX nodes at a same resonant frequency.

16. The system of claim 15 , wherein the TX node is mounted in a door of a kimchi refrigerator;
the plurality of RX nodes

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Dong Zo
• Kwon Sang Wook
• Kim Ki Young
• Kim Nam Yun
• Kim Bong Chul
• Park Yun Kwon
• Park Jae Hyun
• Song Keum Su
• Ahn Chi Hyung
• Ryu Young Ho
• Yoon Chang Wook
• Lee Byoung Hee

Classifications

• F25D2400/36

  Visual displays · CPC title

• F25D29/00 Primary

  Arrangement or mounting of control or safety devices · CPC title

• F25D2700/08

  Sensors using Radio Frequency Identification [RFID] · CPC title

• D06F39/004

  Textiles & Paper · mapped topic

• D06F2202/10

  Textiles & Paper · mapped topic